[Talk-GB] Relation for M5?

[MarkS]

Maybe the wiki should be updated ?

However, I think route relations are quite extensive across the UK. I 
first came across them on the A1 but I'm fairly confident lots of other 
roads have them on.  I'm a fan of consistency so if we remove the M5 one 
then we should remove the others as well.  This would make the UK more 
consistent (within the UK) and would ensure people don't have an example 
to copy from.

As an aside: I've seen some external sites link to the relations. I've 
seen things saying this shouldn't be done, but that hasn't stopped 
people doing it in practice. Deleting the relations would break those links.




On 08/10/2011 15:42, Richard Fairhurst wrote:
> Mark S wrote:
>> >  Looking at the wiki (route=road) it seems to suggest a relation can
>> >  be used here.
> Road route relations are useful in the US, and some other countries, where a
> section of road can belong to two routes.
>
> In the UK, each road can only belong to one route (i.e. an unambiguous ref=
> tag). There is no need for road route relations; the M5 motorway is more
> easily defined as "all ways within the UK bounding box with the tags
> highway=motorway* and ref=M5". Consequently we don't use road route
> relations in the UK.
>
> cheers
> Richard